David Scott Jones, from Northridge USA, read an article one day on Wikipedia saying that Japan has a “Grand Canyon” as America. He wrote me quoting the text : “Adventurous hikers might want to take the city bus to Matō, down National Route 122 in the far southwestern corner of Nikko city territory, in order to hike to Akagane Shinsui Koen (Copper Hydro Park), billed as Japan’s Grand Canyon, as pollution has killed all the trees and left the valley bare. The infamous Ashio copper mine was located nearby.” (See the article here)